Hi Mike,

This may be helpful, I forget where it came from:

I recently asked HiTEC the same question, here the solution I got from
Matt.
Good luck!



Question 1: How do I place a "NOP" instruction at Program Memory
location 0x000 when using the PICC compiler and MPLAB-ICD?

Example of a modified file to include in project: Please note that the
powerup.as file references the "sfr.h" file so you will nedd to make
the appropriate changes to the include path or move the file "sfr.h"
into your project.

#include "sfr.h"

global powerup,start
psect powerup,class=CODE,delta=2
powerup
#if defined(_PIC14)
;clrf STATUS <----- instruction commented out
nop <----- added
movlw start>>8
movwf PCLATH
goto start & 7FFh
#endif
#if defined(_PIC16)
movlw start>>8
movwf PCLATH
movlw start & 0xFF
movwf PCL
#endif
end powerup


When you add this node be sure and select "Pre-process assembly file"
for the node settings of this file.



Question 2: How do I reserve 0x100 program memory locations and RAM
locations 0x70 and 0x1EB-0x1EF when using the MPLAB-ICD tool in debug
mode?


Answers:

Method 1: Create a .as file with the contents shown below. Add this
file to the project.


psect icdram,class=icdram,space=1
ds 5

psect icdram1,class=icdram1,space=1
ds 1

psect icdrom,class=CODE,delta=2
global _icddebug

_icddebug:

ds 0x100
end


Next edit the node properties for the file and add this
text in the Additional Command Line Options:

-L-Picdrom=1F00h -L-Aicdram=01EBh-01EFh -L-Aicdram1=070h-070h

Build you project and move on.



Method 2: Instead of creating a separate file add these statements in
your main C file.


#ifdef debug
#asm
psect icdram,class=icdram,space=1
ds 5

psect icdram1,class=icdram1,space=1
ds 1


psect icdrom,class=CODE,delta=2
global _icddebug

_icddebug:

ds 0x100
#endasm
#endif


Next, edit the node properties for the main C file and select the box
labled "Define Macro". In the data field for this option type in
debug.

Next edit the node properties for the file and add this
text in the Additional Command Line Options:

-L-Picdrom=1F00h -L-Aicdram=01EBh-01EFh -L-Aicdram1=070h-070h

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